I know of at least 3 Swedes that is still alive thanks to the chute. On jumped back in the old days (70-ish) and two jumped in the 00-ich. The two first was in competition but the last was in the local of the airfield. We have also experience of some mid-air where the pilots have been able to fly home with only minor damages.

And yes, it is mandatory to use parachute when gliding in Sweden, the only exception is the flight instructor in back-seat during training. However is that based in the non-comfortable backseat in the Scheibe Bergfalke, today when almost all training is done in glassglider would I guess that 90% on the instructors also uses parachute for the comfort and for the educational argument to the requirement for the student to use it but not the instructor.

I would keep the parachute even if it was not mandatory, it is an not to expensive life saving device.